Parts for your 2020 Nissan Pathfinder-Exhaust gasket

2020 Nissan Pathfinder exhaust gasket — what it is, why it matters

Factory documentation confirms the 2020 Nissan Pathfinder (R52, VQ35DD V6) uses multiple exhaust gaskets. The Nissan Factory Service Manual (EX — Exhaust System, EM — Engine Mechanical, Exhaust Manifold) details gaskets at the cylinder head–to–manifold interface and at exhaust pipe flanges, and the Nissan FAST/EPC parts catalogue lists exhaust manifold gaskets and crush-ring/flange gaskets for this model. So yes — exhaust gaskets are absolutely fitted and relevant on the 2020 Pathfinder.

The exhaust gasket on the 2020 Pathfinder seals the hot gas path so exhaust can leave cleanly through the cats and mufflers without leaks, fumes or odd noises. At the cylinder head it’s typically a multi-layer steel (MLS) gasket designed to cope with expansion, heat cycles and vibration. Downstream, doughnut/crush-ring and flange gaskets seal the front pipe, catalytic converters and muffler joints. Keeping these seals healthy helps the engine management read oxygen sensors correctly, keeps the note civil, and avoids exhaust odour sneaking into the cabin — especially on cold starts or under load.

There’s no fixed service interval for exhaust gaskets, but they’re considered a replace-on-disturb item. Any time the manifold, front pipe or muffler assemblies are removed, fresh gaskets should go in. It’s smart to fit new spring bolts, studs and nuts at the same time, as heat cycling can stretch hardware. Surfaces need to be clean and flat, and reassembly should follow the factory torque and sequence so the gasket seats evenly. A reputable OEM-spec MLS manifold gasket and quality crush rings are worth it — they save doing the job twice.

Common clues a Pathfinder exhaust gasket is on the way out include:

• Ticking or puffing noise on cold start that softens as it warms
• Soot marks or a whiff of exhaust around a flange or the manifold area
• Rattly, breathy note and a slight drop in low-end torque or fuel economy
• Check engine light from skewed O2 readings if the leak is upstream

Left alone, a small leak can cut a groove in the flange faces, overheat nearby components and let fumes in — none of which is ideal on school runs or road trips. A workshop familiar with Nissans will check both banks on the V6, inspect for warped mating faces, and avoid sealants near O2 sensors. For coastal Aussie and Kiwi cars that see towing or frequent short trips, a periodic listen-and-look during regular servicing keeps things sweet.

Popular questions about 2020 Nissan Pathfinder exhaust gaskets

Where are the exhaust gaskets on a 2020 Pathfinder?

This model uses gaskets at the cylinder head to exhaust manifold on each bank, then again at the manifold/front tube connection, and at various flange joints further down the system. Depending on trim and emissions package, there may be crush-ring (doughnut) gaskets at spring-bolt joints as well as flat flange gaskets.

Do exhaust gaskets need routine replacement?

They don’t have a set interval. They’re typically replaced when the exhaust is disturbed or if there’s a leak. Heat, vibration and age eventually harden or crush the material, so fresh gaskets are standard practice during manifold, catalytic converter or muffler work.

Is it safe to drive with a leaking exhaust gasket?

Short distances may be possible, but it’s not recommended. Leaks can allow exhaust fumes into the cabin, can skew sensor data, and may damage mating surfaces. It’s best to book a repair sooner rather than later.